Friday Harbor Airport Weather Forecast

    • 55
    • 79

    Patchy Smoke

    • 55
    • 79

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

    • 54
    • 75

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

Today 4 Aug San Juan County

Sunny. Highs in the 70s to lower 80s. North wind to 10 Mph.

Tonight 4 Aug San Juan County

Mostly clear. Patchy smoke after midnight. Lows in the mid 50s to lower 60s. Light wind becoming north to 10 Mph after midnight.

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  • Temperature Real-Time

Friday Harbor Airport Temperature Statistics

August Temperature

Friday Harbor Airport (0 miles)

  • Lowest 2 August, 2026

    51.1 °F

  • Average August

    61.1 °F

  • Highest 1 August, 2026

    73 °F

Climate (2021–2026)

Friday Harbor Airport (0 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
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